本文共 2296 字,大约阅读时间需要 7 分钟。
add() method is available in java.util package.
add()方法在java.util包中可用。
add() method is used to perform add or subtract the given amount of time to the given cal_fi (calendar field).
add()方法用于对指定的cal_fi(日历字段)执行相加或相减的时间量。
add() method is a non-static method, it is accessible with the class object and if we try to access the method with the class name then we will get an error.
add()方法是一种非静态方法,可通过类对象访问,如果尝试使用类名称访问该方法,则会收到错误消息。
add() method does not throw an exception at the time of adding or subtracting the given time to a given calendar field.
在给定日历字段添加或减去给定时间时, add()方法不会引发异常。
Syntax:
句法:
public abstract void add(int cal_fi, int time);
Parameter(s):
参数:
int cal_fi – represents the calendar field.
int cal_fi –代表日历字段。
int amt – represents the amount of time to be added or subtracted to the calendar field.
int amt –表示要添加或减去到日历字段的时间。
Return value:
返回值:
The return type of the method is void, it returns nothing.
该方法的返回类型为void ,不返回任何内容。
Example:
例:
// Java Program to demonstrate the example of// void add(int cal_fi,int amt) method of Calendarimport java.util.*;public class AddOfCalendar { public static void main(String[] args) { // Instantiating a Calendar object Calendar ca = Calendar.getInstance(); // Display current calendar System.out.println("ca.getTime(): " + ca.getTime()); // By using add() method is to substract 2 years // to the current calendar ca.add(Calendar.YEAR, -2); // Display Update Calendar System.out.println("cal.add(Calendar.YEAR, -2): " + ca.getTime()); // By using add() method is to add 2 months // to the current calendar ca.add(Calendar.MONTH, 2); // Display Update Calendar System.out.println("cal.add(Calendar.MONTH, 2): " + ca.getTime()); // By using add() method is to substract 2 days // to the current calendar ca.add(Calendar.DATE, -2); // Display Update Calendar System.out.println("cal.add(Calendar.DATE, -2): " + ca.getTime()); }}
Output
输出量
ca.getTime(): Thu Jan 23 11:06:12 GMT 2020cal.add(Calendar.YEAR, -2): Tue Jan 23 11:06:12 GMT 2018cal.add(Calendar.MONTH, 2): Fri Mar 23 11:06:12 GMT 2018cal.add(Calendar.DATE, -2): Wed Mar 21 11:06:12 GMT 2018
翻译自:
转载地址:http://nqxzd.baihongyu.com/